Closure for tanks



April 13 192e, 1,580,229

A. BOYNTON CLOSURE FORYTANKS Filed A ril 9. i924 'II III VIII/III, IB-

' WITNESSES 7 v v 6% fllewndr n/{0124 ATTORNEYS IN VENUTOR Patented Apr. 13, 1926.

UNITED STATES 1,580,229 PATENT, OFFICE.

LEXAN ER noYNToN or SAN ANTONIO, rnxas;

' CLOSURE FOR TANKS.

Application filed April e, 1924. Serial no, 705394.

. T 0 a l whom it may concemi:

sures for tanksand is particularly designed for use as a closure for the clean out holes of oil tanks. 7 I 1 The object of the invention is to provide a closure of this character which may be ap-.

plied and removed from the exterior and without the necessity of workmen going into the tank. This feature has special advantages in connection with oil tanks since in such tank the fumes or gases from the oil render it dangerous for workmen to go inside of the tank to place or hold the bolts or other fastening means while the workmen on the outside apply the nuts or other equivalent devices.

A further object is to provide a closure of this character and having these advantages and capacities and which is also of simple and durable construction, reliable and convenient in operation, and adapted to be manufactured at a comparatively slight ex pense from materials and by means'of facilities ordinarily available.

Other objects and advantages of the invention reside in certain novel features of the construction, combination and arrangement of parts which will be hereinafter more fully described and particularly pointed out in the appended claims, reference being had to the accompanying drawings forming part of this specification and in which:

Figure 1 is a top plan view of one embodi ment of the invention with one corner of the closure plate broken away for the sake of illustration;

Figure 2 is a View in section on line 2-2 of Figure 1; 1

Figure 3 is a fragmentary View in perspective' of the under side of one corner of the assembly shown in Figure 1, parts being broken away for the sake of illustra tion;

Figure 4 is a view in bottom plan of one of the channel bars;

Figure 5 is a fragmentary detail View, p y in l g tud n l t l ti'fel section and nel bar and is slidably fitted thereon.

channel bar illustrated'in Figure 4; and

Figure 6 is a fragmentary perspective View, showing a ortion of the casing ein ployed for the channel bars.

partly in elevation showing one end of the Referrin to the drawings, it will be seen i "that .theclosure which constitutes the present invention contemplates a frame designated' generally at 10,"the frame being of rectangular .foim and being made up; of pairs of channel bars, designated at 11 and 12 respectively. The channel bars 11 and 12 are of identical construction with the ear ception that the channel bars 11 have their side flanges cut away or recessed as at 13 to accommodate the channel bars 12. Each channel bar includes a body portion and side flanges. channel bar is formed with a plurality of bolt holes 141.

Bolts, designated generally at 15, are'provided and include heads 16 and shanks 17, the heads being fitted in the channels of the bars 11 and 12, as shown in Figure 2, and the shanks 17 projecting through and beyond the bolt holes 14:. The bolts 15 are pre- The body portion of each.

ventedfrom turning by the engagement of their heads 16 with the side flanges of the channel bars and'in order to prevent the bolts 15 from falling from the frame at any time, a casing 18 is provided for each chan- The ca sing 18 is in the form of a channel de signed to embrace the channel bar to which it is to be'fitted, and in the assembly the body portiono'f the casing 18 extends across the opening of the channel bar, with which it is associated. The flanges of the channel casing 18 are formed with inturned portions 19 designed to fit up against the under side of the body portion of the channel bar with which the casing is associated, as shown in Figure 2. The spaces between the inturned portions 19 of the flanges of the casings 18 accommodate the shanks 17 of the bolts 15. Certain of the casings 18 are recessed, as at 20, to accommodate the channel bars.

A closure plate 21 is provided and is formed with boltholes 22 to accommodate the shanks 17 of the bolts15. Nuts 23 are threaded on the outerr ends of the shanks 17 of the bolts 15 and engage the closure plate 21 to hold the same in position.

With this arrangement the bolts are held the closure plate is applied or removed and even ivhen the closure plate is removed these bolts cannot fall back into the tank. The closure plate may be applied and removed from the exterior and Without the necessity of workmen going inside of the tank.

The frame 10 may be secured to the tank structure in any convenient manner as for instance as by means of bolts and nuts 25 i which coact With the tank structure and with the ends of the channel bars 12.

I claim:

1. A closure of the character described including a rectangular frame made up of channel bars having body portions and side flanges, the side flanges of certain of said channel bars being cut away to accommodate the other channel bars, the body portions of the channel bars being formed with belt holes bolts having heads received in the channels of said bars and having shanks projecting through said bolt holes, a cas ing tor each channel bar, a closure plate having bolt holes accommodating the projecting portions of .said bolts, and nuts threaded on the bolts and engaged with said closure plates.

2. A closure of the character described including a rectangular frame made up of channel bars having body portions and side flanges, the body portions of the channel bars being formed With bolt holes, bolts having heads received in the channels of said bars and having shanks projecting through said boltholes, the heads of the bolts being engageable with the flanges of the channel for preventing turning of the bolts relative to the channel bars, and a casing for each channel bar for preventing the bolts from dropping out of the channel bars.

ALEXANDER BOYN'I ON. 

